Fig. 1
From: Segregation and pattern formation in dilute granular media under microgravity conditions
Snapshots (bottom view) during experiments (top) and simulations (bottom). Large beads are highlighted with coloured circles. In the system with 80 (a) large beads, granular gas is observed. After the addition of 500 (b) and 1000 (c) small particles, segregation occurs and the large beads gather in the central bulk. Then 150 additional large grains (d) are injected and a complex pattern arises. The sinusoidal forcing is along the horizontal axis
